Well said Boss, there really is nothing worse than plates throwing a tantrum, here is another idea, tensil stregth, as you lay bricks on their side, use plates on top and bottom with modified bricks with 2 studs to pull against each other. It works awesome, and it gives a really unique thickness. Or, if you really want to solve the problem, just mount the whole project on a layer of 3/4 AC plywood.